Compal fl90 help

[Hotlobster]

Hi,

I own an old compal fl90, and some months ago my 8600m gt card died.. 
I have looked for cards that could replace it and bought one acer HD3650 with 256mb ddr3. 
The card kinda works, but sometimes when I'm watching videos, or anytime that I use blender or any software with open gl
the screen fades in funny colors. I heard that the vbios from the other card is in the system and wonder if someone could help me get a custom bios for my new card.. Also sometimes in startup I notice that something is eating all the ram, but don't know if it's related